[Land-speed] pilot bearing

[Jim Dincau]

Ed,
     I havent been able to find a sealed bearing that will fit in my crank 
(4 cyl Chevy II, same as an L6 or SB V-8). They all seem to be much larger 
OD for late model LS V-8s. I remember using sealed rollers drag racing but 
they all went in the flywheel not the crank. It looks like I will change to 
an oilite bushing.
Jim

----- Original Message ----- 
From: "23weldon" <23.weldon at comcast.net>
To: "Jim Dincau" <jdincau at qnet.com>; "land Speed List" 
<land-speed at autox.team.net>
Sent: Thursday, January 27, 2011 6:29 PM
Subject: Re: [Land-speed] pilot bearing


> Jim - Ball bearing if you have the right mounting space and shield on the 
> outer side (to hold in the grease)and bronze oilite bushing in that order. 
> Needle bearings don't like misalignment and aren't too happy with high 
> speeds either.  Also the drawn cup Torrington needle bearings have to be 
> installed exactly to their specs with the right kind of press tool (see 
> their catalog). Also they need a full hardness inner race (58Rc+) or a 
> ground shaft to the same hardness.   A conventional roller bearing (the 
> kind with cylindrical rollers and thick ground inner and outer races will 
> take heavier loads than a ball bearing but are somewhat less tolerant of 
> misalignment.  They come in the same dimensions as ball bearings; but are 
> hard to find and pricey.
> Ed Weldon
>
> ----- Original Message ----- 
> From: "Jim Dincau" <jdincau at qnet.com>
> To: "land Speed List" <land-speed at autox.team.net>
> Sent: Thursday, January 27, 2011 6:08 PM
> Subject: [Land-speed] pilot bearing
>
>
>> What do you like ? Bushing or roller? I currently have a needle bearing 
>> unit, it is trash after about 80 miles of running. Trans input shaft 
>> alignment to crank is good and bell housing face is square with crank 
>> also.